Yup, I already stated that our sky, which has at least one artificial object in it already, could just be a hologram, etc. but maybe you are suggesting that it is an actual structure, like a shell around atys? I guess the karavan could live on the exterior surface of the shell then. The shell would have either been created before cults were used to control homins or neither kami or Kara has the ability to change the images displayed on the interior of the shell.
